Remove some more flattening artifacts.  Also a #98 thing.
Remove some more flattening artifacts.  Also a #98 thing.

mrakgr/futhark,ihc/futhark,ihc/futhark,ihc/futhark,HIPERFIT/futhark,diku-dk/futhark,CulpaBS/wbBach,mrakgr/futhark,diku-dk/futhark,diku-dk/futhark,HIPERFIT/futhark,mrakgr/futhark,HIPERFIT/futhark,diku-dk/futhark,diku-dk/futhark